Magnum v4 72B vs Nano Banana Pro (Gemini 3 Pro Image Preview)
Magnum v4 72B at $3.45 in and $5.75 out and Nano Banana Pro (Gemini 3 Pro Image Preview) at $2.30 in and $13.80 out — per million tokens, from the same wallet.
Magnum v4 72B
Anthracite
2.2¢
for a client proposal
$3.45 in · $5.75 out / 1M
16K context · released October 2024
Nano Banana Pro (Gemini 3 Pro Image Preview)
2.3¢
for a client proposal
$2.30 in · $13.80 out / 1M
66K context · released November 2025
Asking all both at once — identical prompt, identical context — costs about 4.4¢ for a typical client proposal.
At a glance
- Cheapest input: Nano Banana Pro (Gemini 3 Pro Image Preview) at $2.30 per million tokens.
- Cheapest output: Magnum v4 72B at $5.75 per million tokens.
- Largest context: Nano Banana Pro (Gemini 3 Pro Image Preview) at 66K tokens — about 94 pages.
Cost per task
Estimated totals at the rates above. Solid bar is input, lighter bar is output.
Quick code fix
2K in · 500 outDraft a client proposal from notes
5K in · 800 outContext-heavy session (Alyph workspace)
155K in · 4K outAnalyze a 50-page legal contract
35K in · 1K outLarge architecture refactor
250K in · 3K outSolid part of each bar is input tokens, the lighter part is output. Models that don’t fit a task are marked instead of priced.
Cost vs Token Amount
Drag the slider to adjust the split between input and output workload.
Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.
Pricing
Specs
Try it with real numbers
2K tokens in · 500 tokens out.
Nano Banana Pro (Gemini 3 Pro Image Preview)
1.1¢
for this task
40% input · 60% output
Full pricing →All 2, same prompt and context: 2.1¢. That is the entire cost of the comparison.
Your $5 welcome credit covers about 235 of these.
Which should you pick?
For long documents, Nano Banana Pro (Gemini 3 Pro Image Preview) has the largest context window here — 66K tokens.
On price, Magnum v4 72B is the cheapest of the two on a typical task, at about 2.2¢.
For images or files, Nano Banana Pro (Gemini 3 Pro Image Preview) can read them directly; Magnum v4 72B is text-only.
If you want to watch the model think, Nano Banana Pro (Gemini 3 Pro Image Preview) shows reasoning; the other answers directly.
Or don’t pick. Send the identical prompt to all both, read the answers side by side, and keep the winner. How to run a fair bake-off →
Questions, answered
Which is cheaper, Magnum v4 72B or Nano Banana Pro (Gemini 3 Pro Image Preview)?
Which has the largest context window?
Can I run Magnum v4 72B and Nano Banana Pro (Gemini 3 Pro Image Preview) side by side on Alyph?
Ask both at once
Identical prompt, identical context, answers side by side — about 4.4¢ for a typical client proposal. Free to start, with $5 of credit.